Speaking to the Mail On Sunday she said: "My operation was performed by a top Harley Street cosmetic surgeon. I paid top dollar."

She went on: "I never felt womanly enough on top. I’d compare myself to the other girls in the band during photoshoots and was jealous of their beautiful curves."

Although pleased with the results, Hannah reveled her health began to suffer: "Within six months my hair started to fall out in clumps.

"Then I started sleeping more and more – eventually 22 hours a day. I couldn’t move from bed because my muscles were aching. I lost balance, I was always freezing cold and my brain fog meant I couldn’t remember anything."

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Eventually in 2016 she made the decision to have them removed and almost immediately started to feel better.

"I woke from the op feeling 60 per cent better almost instantly,’ she recalled. "My temperature rose up to normal and my fever disappeared, as did the fatigue and anxiety. My natural energy just came back."

The singer is now trying to get her life back on track, and most recently was seen on EastEnders playing Karen Taylor's sister Kandice.